Preferential incorporation of dark, coloured materials into nests by a mound-nesting stream cyprinid

2018 ◽  
Vol 93 (4) ◽  
pp. 719-722
Author(s):  
Andrew J. Bramburger ◽  
Katherine E. Moir ◽  
M. Brian C. Hickey
Keyword(s):  
Preferential Incorporation

scholarly journals Histone H3 Lysine 4 Methylation Marks Postreplicative Human Cytomegalovirus Chromatin

2012 ◽  
Vol 86 (18) ◽  
pp. 9817-9827 ◽  
Author(s):  
Alexandra Nitzsche ◽  
Charlotte Steinhäußer ◽  
Katrin Mücke ◽  
Christina Paulus ◽  
Michael Nevels
Keyword(s):  
Dna Replication ◽  
Dna Synthesis ◽  
Histone Modification ◽  
Dna Polymerase ◽  
Human Cytomegalovirus ◽  
Viral Genome ◽  
Histone H3 ◽  
Viral Dna ◽  
The Impact ◽  
Preferential Incorporation

In the nuclei of permissive cells, human cytomegalovirus genomes form nucleosomal structures initially resembling heterochromatin but gradually switching to a euchromatin-like state. This switch is characterized by a decrease in histone H3 K9 methylation and a marked increase in H3 tail acetylation and H3 K4 methylation across the viral genome. We used ganciclovir and a mutant virus encoding a reversibly destabilized DNA polymerase to examine the impact of DNA replication on histone modification dynamics at the viral chromatin. The changes in H3 tail acetylation and H3 K9 methylation proceeded in a DNA replication-independent fashion. In contrast, the increase in H3 K4 methylation proved to depend widely on viral DNA synthesis. Consistently, labeling of nascent DNA using “click chemistry” revealed preferential incorporation of methylated H3 K4 into viral (but not cellular) chromatin during or following DNA replication. This study demonstrates largely selective epigenetic tagging of postreplicative human cytomegalovirus chromatin.

Preferential Incorporation of Formate Carbon into Leukemic Blood Cells as Indicated by Autoradiography.

1951 ◽  
Vol 77 (4) ◽  
pp. 849-854 ◽  
Author(s):  
H. E. Skipper ◽  
J. B. Chapman ◽  
G. A. Boyd ◽  
W. H. Riser ◽  
M. Bell
Keyword(s):  
Blood Cells ◽  
Preferential Incorporation

Quantification of incorporation of [15N]ammonia into plasma amino acids and urea

1995 ◽  
Vol 269 (3) ◽  
pp. E508-E515 ◽  
Author(s):  
B. W. Patterson ◽  
F. Carraro ◽  
S. Klein ◽  
R. R. Wolfe
Keyword(s):  
Amino Acids ◽  
Distribution Pattern ◽  
Intravenous Administration ◽  
Human Subjects ◽  
Relative Distribution ◽  
Plasma Amino Acids ◽  
Plasma Component ◽  
Initial Appearance ◽  
Preferential Incorporation

The incorporation of 15N into individual plasma amino acids and urea was quantified in five human subjects who received 15NH4Cl either orally or intravenously for 6 h. After oral tracer administration, the highest enrichment was achieved by arginine, followed by urea and glutamine; distribution of 15N within glutamine was 55% amide and 45% amino N. Glutamine achieved the highest enrichment after the intravenous administration of tracer, with a distribution of 92% amide and 8% amino N. The relative distribution pattern of 15N incorporation was quantified from the rate at which 15N initially appeared in each plasma component. Amino acids (especially arginine, glutamine, and glutamate) accounted for greater than one-half (54%) of the orally administered tracer that was initially recovered in plasma components, compared with 46% initial appearance for urea; for the intravenous tracer, amino acids accounted for 78% of initial appearance of tracer compared with 22% for urea. Our results highlight the involvement of the splanchnic bed in the utilization of orally administered ammonia (preferential incorporation of oral tracer into arginine, urea, glutamate, and the amino N of glutamine) in contrast to the preferential incorporation of systemically administered ammonia into the amide N of glutamine and alanine.

scholarly journals Manganese incorporation in synthetic hercynite

2015 ◽  
Vol 79 (3) ◽  
pp. 635-647 ◽  
Author(s):  
G. D. Bromiley ◽  
G. D. Gatta ◽  
T. Stokes
Keyword(s):  
Single Crystal ◽  
Absorption Spectroscopy ◽  
Structure Refinement ◽  
Tetrahedral Site ◽  
Silicate Melt ◽  
X Ray ◽  
Octahedral Sites ◽  
Partial Disorder ◽  
X Ray Absorption ◽  
Preferential Incorporation

AbstractManganese incorporation in synthetic hercynite, and partitioning between hercynite and silicate melt synthesized at 1.0 GPa, 1250°C, and at an fO2 buffered by Fe–FeO, has been studied by X-ray absorption spectroscopy and single-crystal X-ray structure refinement. Spectra indicate the presence of both Mn2+ and Mn3+ (and possibly also Mn4+) in synthetic hercynite and partitioning of Mn2+ into the melt phase, and Mn3+ into hercynite, respectively, under run conditions. X-ray refinement is consistent with partial disorder of Fe and Al across tetrahedral and octahedral sites. A higher than expected degree of Fe-Al disorder in the Mn-bearing hercynite can be explained by preferential incorporation of Mn2+ onto the tetrahedral site, and indicates that Fe-Al disorder in pure, stoichiometric hercynite cannot necessarily be used to determine closure temperatures in natural spinel. However, partitioning of Mn2+ and Mn3+ between melt and hercynite suggests that Mn incorporation in hercynite could be used as a measure of fO2 conditions in magmas during spinel crystallization.

Identification of Growth Induced Planar Defects in Silicon

1985 ◽  
Vol 62 ◽  
Author(s):  
H. P. Strunk ◽  
A. Kessler ◽  
E. Bauser
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Crystal Growth ◽  
Epitaxial Layers ◽  
Growth Interface ◽  
Fringe Contrast ◽  
Planar Defects ◽  
Transmission Electron ◽  
Contrast Analysis ◽  
Preferential Incorporation

ABSTRACTPlanar defects have been detected by transmission electron microscopy in silicon epitaxial layers that have been grown from Ga solutions below 500 °C. According to fringe contrast analysis, this defect can be modelled by a plane of Ga atoms within the Si lattice. This plane forms during crystal growth due to local preferential incorporation of Ga atoms at crystallographically defined sites, that occur repetitively in the trains of monomolecular growth steps at the liquid/solid growth interface.

Preferential incorporation of sn-2 lysoPC DHA over unesterified DHA in the young rat brain

1994 ◽  
Vol 267 (5) ◽  
pp. R1273-R1279 ◽  
Author(s):  
F. Thies ◽  
C. Pillon ◽  
P. Moliere ◽  
M. Lagarde ◽  
J. Lecerf
Keyword(s):  
Fatty Acids ◽  
Rat Brain ◽  
Acid Moiety ◽  
Degree Of Unsaturation ◽  
Old Rats ◽  
Young Rat ◽  
Arachidonic Acids ◽  
The Brain ◽  
Uptake And Metabolism ◽  
Preferential Incorporation

The uptake and metabolism of [3H]docosahexaenoic acid (DHA) esterified at the sn-2 position of lysophosphatidylcholine (lysoPC DHA) and in the unesterified form, both bound to albumin, was studied in 20-day-old rats. LysoPC DHA was preferentially recovered in the brain (4-5% of the injected radioactivity) over the unesterified form of DHA (0.3-0.4%). Conversely, the lysoPC form was taken up less than or at the same extent as the unesterified form by the liver, heart, and kidney. In the brain, DHA was mainly recovered in phosphatidylethanolamine whether the esterified or the unesterified form was used, although DHA from lysoPC was esterified at the same extent in phosphatidylcholine and phosphatidylethanolamine after 2.5 min. The uptake of labeled palmitic, oleic, linoleic, and arachidonic acids, esterified or not in lysophosphatidylcholine, was also studied in brain, liver, heart, and kidney. Only the brain preferentially incorporated unsaturated (but not saturated) lysoPC, with the uptake increasing with the degree of unsaturation of the fatty acid moiety. These results strongly suggest that the young rat brain specifically utilizes albumin-lysoPC-containing polyunsaturated fatty acids.

Preferential incorporation of sulfate into calcite polymorphs during calcium carbonate precipitation: an experimental approach

CrystEngComm ◽  
2018 ◽  
Vol 20 (16) ◽  
pp. 2241-2244 ◽  
Author(s):  
V. Kartnaller ◽  
E. M. Ribeiro ◽  
F. Venancio ◽  
F. F. Rosario ◽  
J. Cajaiba
Keyword(s):  
Molecular Dynamics ◽  
Calcium Carbonate ◽  
Experimental Validation ◽  
Experimental Approach ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Sulfate Ions ◽  
Molecular Dynamics Calculations ◽  
Preferential Incorporation

Experimental validation was given to molecular dynamics calculations regarding the preferential retention of sulfate ions in the calcite polymorph of calcium carbonate.

Preferential Incorporation of Coloured-carotenoids Occurs in the LH2 Complexes From Non-sulphur Purple Bacteria Under Carotenoid-limiting Conditions

2005 ◽  
Vol 86 (1-2) ◽  
pp. 25-35 ◽  
Author(s):  
Andrew Gall ◽  
Sarah Henry ◽  
Shinichi Takaichi ◽  
Bruno Robert ◽  
Richard J. Cogdell
Keyword(s):  
Purple Bacteria ◽  
Preferential Incorporation

Deep Level Characterization of LP-MOCVD Grown Al0.48In0.52As

1993 ◽  
Vol 325 ◽  
Author(s):  
F. Ducroquet ◽  
G. Guillot ◽  
K. Hong ◽  
C.H. Hong ◽  
D. Pavlidis ◽  
...  
Keyword(s):  
Deep Level ◽  
Shallow Donor ◽  
Electrical Characteristics ◽  
Oxygen Contamination ◽  
Deep Donor ◽  
Low Pressure Mocvd ◽  
Different Origins ◽  
Inp Substrates ◽  
Preferential Incorporation

AbstractDeep levels in unintentionally doped A10. 48In0.52As layers epitaxially grown on InP substrates by low-pressure MOCVD have been investigated as a function of growth temperature (Tg ranging from 570 to 690°C). Two different origins for the residual carrier concentration are deduced depending on Tg: i) low growth temperatures favor the creation of a deep donor located at Ec-(0.13±0.04)eV; ii) At higher Tg, a preferential incorporation of a shallow donor occurs, which can be attributed to silicon by SIMS measurements. The oxygen contamination deduced by SIMS and the electrical characteristics of the AlInAs layers do not appear to be correlated.

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